diff options
Diffstat (limited to 'lib/Thread.pm')
| -rw-r--r-- | lib/Thread.pm | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/lib/Thread.pm b/lib/Thread.pm index c6489541bb..4e88706ceb 100644 --- a/lib/Thread.pm +++ b/lib/Thread.pm @@ -52,15 +52,24 @@ In Perl 5.8 the ithreads model became available through the C<threads> module. Neither model is configured by default into Perl (except, as mentioned -above, in Win32 ithreads are always available.) +above, in Win32 ithreads are always available.) You can see your +Perl's threading configuration by running C<perl -V> and looking for +the I<use...threads> variables, or inside script by C<use Config;> +and testing for C<$Config{use5005threads}> and C<$Config{useithreads}>. + +For old code and interim backwards compatibility, the Thread module +has been reworked to function as a frontend for both 5005threads and +ithreads. -For backwards compatibility, the Thread module has been reworked -to function as a frontend for both 5005threads and ithreads. Note that the compatibility is not complete: because the data sharing models are directly opposed, anything to do with data sharing has to be thought differently. With the ithreads you must explicitly share() variables between the threads. +For new code the use of the C<Thread> module is discouraged and +the direct use use of the C<threads> and C<threads::shared> modules +is encouraged instead. + Finally, note that there are many known serious problems with the 5005threads, one of the least of which is that regular expression match variables like $1 are not threadsafe, that is, they easily get |